Table 1 Results relating to round 1 of the Delphi study, including specific percentage of consensus reached for each of the four questions
| Â | Â | Q1 | Q2 | Q3 | Q4 | ||
|---|---|---|---|---|---|---|---|
Group | Item | Consider the item? | Definition and terminology | Importance to quality (mean) | % responses level 4 or 5 | Attitude to item (mean) | % responses level 4 or 5 |
Reproducibility/reliability | Stability | 71.4 | 68.2 | 3.62 | 65.4a | 3.62 | 69.2 |
Re-test reliability | 92.9 | 96.0 | 4.5 | 85.7 | 4.43 | 85.7 | |
Intra-rater | 100.0 | 92.9 | 4.5 | 92.9 | 4.46 | 89.3 | |
Inter-rater | 100.0 | 92.9 | 4.46 | 89.3 | 4.5 | 89.3 | |
Internal consistency | 67.9 | 100.0 | 3.39 | 50.0a | 3.29 | 46.4a | |
Validity | Content validity | 100.0 | 89.3 | 4.68 | 96.4 | 4.64 | 96.4 |
Discriminant validity | 100.0 | 92.9 | 4.21 | 82.1 | 4.14 | 75.0 | |
Convergent validity | 78.6 | 91.3 | 3.14 | 28.6a | 3.11 | 28.6a | |
Concurrent validity | 82.1 | 88.9 | 3.25 | 32.1a | 3.25 | 35.7a | |
Predictive validity | 85.7 | 91.7 | 3.79 | 64.3a | 3.71 | 60.7a | |
Responsiveness | Responsiveness | 100.0 | 89.3 | 4.5 | 85.7 | 4.37 | 81.5 |
Sensitivity | 92.9 | 85.7 | 4.25 | 85.7 | 4.14 | 78.6 | |
Min. important diff. | 92.9 | 88.9 | 4.04 | 71.4 | 3.96 | 67.9 | |
Floor and ceiling | 89.3 | 96.2 | 3.54 | 53.6a | 3.39 | 46.4a | |
Feasibility | Interpretability | 100.0 | 89.3 | 4.21 | 82.1 | 4.18 | 82.1 |
Familiarity required | 78.6 | 95.7 | 3.79 | 71.4 | 3.75 | 71.4 | |
Scoring complexity | 92.6 | 96.2 | 3.75 | 57.1a | 3.86 | 60.7a | |
Completion complexity | 85.7 | 96.3 | 3.54 | 57.1a | 3.64 | 60.7a | |
Cost | 89.3 | 88.9 | 3.61 | 64.3a | 3.75 | 67.9 | |
Duration | 92.9 | 100.0 | 3.75 | 67.9 | 3.93 | 75.0 | |